def create_image(imageFile):
pixbuf = load_pixbuf(imageFile)
image = Clutter.Image()
pixelFormat = Cogl.PixelFormat.RGB_888
if pixbuf.get_has_alpha():
pixelFormat = Cogl.PixelFormat.RGBA_8888
image.set_data(pixbuf.get_pixels(), pixelFormat, pixbuf.get_width(),
pixbuf.get_height(), pixbuf.get_rowstride())
return image
def load_clutter_image_from_resource(resource_path):
pixbuf = GdkPixbuf.Pixbuf.new_from_resource(resource_path)
image = Clutter.Image()
if pixbuf is not None:
format = Cogl.PixelFormat.RGB_888
if pixbuf.get_has_alpha():
format = Cogl.PixelFormat.RGBA_8888
image.set_data(pixbuf.get_pixels(),
format,
pixbuf.get_width(),
pixbuf.get_height(),
pixbuf.get_rowstride())
return image
def do_allocate(self, box, flags):
image = Clutter.Image()
try:
scaled_image = self.ninepatch.render(int(box.get_width()),
int(box.get_height()))
image.set_data(
data=scaled_image.tostring(),
pixel_format=Cogl.PixelFormat.RGBA_8888,
width=box.get_width(),
height=box.get_height(),
row_stride=box.get_width() * 4,
)
self.set_content(image)
if self.stage:
self.stage.set_title(self.old_stage_title)
except ninepatch.ScaleError:
if self.stage:
self.stage.set_title('9 Patch is undersized!')
self.set_allocation(box, flags)
def get_texture(self, doc, pagenum, reqscale):
texture = None
textureinfo = None
self.cachelock.acquire()
c = self.cache[doc][pagenum]
if len(c) > 0:
previous = c[0]
for cur in c:
curscale, _, _ = cur
if curscale < reqscale: break
previous = cur
_, texture, textureinfo = previous
readtime = time()
self.cachelock.release()
if texture:
image = Clutter.Image()
image.set_data(
texture.get_pixels(), Cogl.PixelFormat.RGBA_8888
if texture.get_has_alpha() else Cogl.PixelFormat.RGB_888,
texture.get_width(), texture.get_height(),
texture.get_rowstride())
actor = Clutter.Actor()
actor.set_content(image)
actor.set_size(texture.get_width(), texture.get_height())
cloneinfo = CloneInfo(textureinfo.origscale, doc, pagenum,
readtime)
if FREEING_STRATEGY == "aggressive":
self.cachelock.acquire()
self.cacheUse[doc, pagenum, textureinfo.origscale] += 1
self.cachelock.release()
return (actor, cloneinfo)
else:
return None
def __init__(self):
super().__init__()
self.image_res_path = "background_image.png"
self.background_image = Clutter.Image()
self.set_content(self.background_image)
self._load_image()
# Load the texture data from a file
pixbuf = GdkPixbuf.Pixbuf.new_from_file('redhand.png')
# Use the correct pixel format depending on whether the image
# has an alpha channel
pixel_format = Cogl.PixelFormat.RGB_888
if pixbuf.get_has_alpha():
pixel_format = Cogl.PixelFormat.RGBA_8888
data = pixbuf.read_pixel_bytes()
width = pixbuf.get_width()
height = pixbuf.get_height()
stride = pixbuf.get_rowstride()
# The Image content knows how to draw texture data
image = Clutter.Image()
image.set_bytes(data, pixel_format, width, height, stride)
# A Stage is like any other actor, and can paint a Content
stage.set_content_gravity(Clutter.ContentGravity.RESIZE_ASPECT)
stage.set_content_scaling_filters(Clutter.ScalingFilter.TRILINEAR, Clutter.ScalingFilter.LINEAR)
stage.set_content(image)
# Show a label with the current content gravity
label = 'Content Gravity: Resize Aspect'
text = Clutter.Text(text=label)
text.add_constraint(Clutter.AlignConstraint(source=stage, align_axis=Clutter.AlignAxis.BOTH, factor=0.5))
stage.add_child(text)
# Change the content gravity on tap/click
action = Clutter.TapAction()